2 twists + random clearo/vivi starter kits with battery charger and case run around $75.
lambo/young june lava tube 2.0 kits run about $75 not including the clearos.
you can even piece together a bolt fixed voltage mod or something similar for around $100 with batteries charger and the
juice delivery option of your choice.
i started with option 1 and already upgraded to option 2. not because i dont like my twists.... in fact i love them and plan to continue to use them for going out and work. i just wanted something with more tech goodies including an ohm reader for cheap. there is a good chance it only needs to last me until tax refund time when i will be seriously considering a provari but it NEVER hurts to have backups IMHO.
650 twists for a 2-3ml a day person like me last about a 6ish hours but i have managed to kill it once in about 3 hours chain
vaping over the weekend lol. one charger at home and one at work + carrying my little kit with 2 650s works just fine for the whole day fyi and I don't feel you can go wrong with that setup.